siteblocker.app

What It Is

SiteBlocker is a website-blocking browser extension for Chrome and Firefox, designed to help users reduce visits to distracting websites, improve browsing habits, and stay focused. The page positions it for students, remote workers, and teams, though its product format is still primarily that of a personal browser extension.

Core Features

The free version already covers the main focus-management features, including one-click website blocking, multiple custom blocklists, smart scheduled blocking, Focus Mode, a Pomodoro timer, whitelist mode, dark mode, and cross-device sync. Basic insights are also available for free, showing total blocks, streaks, and the Top 3 websites. Pro adds keyword blocking, which can trigger blocks based on words in URLs, page titles, and page content. It also includes a full analytics dashboard, weekly activity charts, popular blocked sites, hourly distraction heatmaps, focus session tracking, and cross-device insight syncing.

Pricing and Business Model

Pricing is straightforward and follows a freemium model. Free costs $0 and keeps the core features free forever; Pro is $2.99/month or $24.99/year; Lifetime is a one-time purchase of $49.99 and includes Pro features plus future updates. Compared with similar tools, the page emphasizes that its free plan has fewer limitations and that Pro is relatively inexpensive. However, it does not disclose payment methods, refund policy, enterprise purchasing options, or invoice information.

Pros and Cons

Its strengths are a low barrier to entry, no account required, a generous free feature set, and a stated policy of not collecting or storing personal browsing data. The combination of Focus Mode, scheduling, and whitelist mode is practical for studying and remote work. The downsides are that only Chrome and Firefox are mentioned, with no system-level, mobile, or full-device blocking; enterprise capabilities such as team collaboration, admin permissions, and centralized policy management are missing; security and compliance are limited to a privacy statement, with no visible certifications; and APIs or third-party integrations are not disclosed.

Who It’s For and Access from China

SiteBlocker is better suited to individual users, students, and lightweight teams that want to manage distractions through a browser extension, rather than organizations that need enterprise-grade controls. Availability from mainland China is unknown; Chrome Web Store, Firefox Add-ons, and international payment access may also affect actual usability. If access or payment is restricted, alternatives such as BlockSite, Freedom, or localized focus and website-blocking tools in China may be worth considering.